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quick dumb question


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Isn't the SX a 4 speed for closed course SX & MX, where the XC is a 5 or 6 speed and the XC-W is a 5 or 6 speed wide ratio, both meant for off-road, but with no light? I don't know KTM's, but I thought that's what I read at some point.

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OK, found this.............

ENGINE >> 2009 KTM 450 SXF

Engine type Single cylinder, 4-stroke

Displacement 449.3 cc

Bore x stroke 97 x 60,8 mm (3.82 x 2.39")

Compression ratio 12.5:1

Starter E-Starter/12 V 4 Ah

Transmission 4 gears

Carburetor Keihin FCR-MX 41

Control 4 V / DOHC with finger followers

Lubrication Pressure lubrication

Engine lubrication Motorex, SAE 10W50

Primary drive 29:74

Final drive 14:52

Cooling Liquid cooled

Clutch Wet multi-disc clutch, operated hydraulically

Ignition Kokusan

CHASSIS >> 2009 KTM 450 SXF

Frame Central double-cradle-type 25CrMo4

Subframe Aluminium

Handlebar Renthal, Aluminium Ø 28/22 mm

Front suspension WP-USD Ø 48 mm (1.89")

Rear suspension WP PDS shock absorber

Suspension travel front/rear 300 / 335 mm (11.81 / 13.19")

Brakes, front/rear Disc brakes 260 / 220 mm (10.24 / 8.66")

Rims, front/rear 1.6 x 21"; 2.15 x 19" Excel

Tires, front/rear 80/100-21"; 110/90-19"

Chain 5/8 x 1/4"

Main silencer Aluminium

Steering head angle 63,5°

Wheel base 1475 ± 10 mm (58.07 ± 0.38")

Ground clearance (unloaded) 380 mm (14.96")

Seat height 985 mm (38.78")

Tank capacity approx. 8 liters (2.11 gal)

Weight (no fuel) approx. 104.6 kg (230.6 lbs)

ENGINE >> 2009 KTM 450 XC-F

Engine type Single cylinder, 4-stroke

Displacement 449.30 cc

Bore x stroke 97/60.8 mm (3.82/2.39")

Compression ratio 12.5:1

Starter/Battery E-Starter / 4 Ah

Transmission 5 gears XC semi-close-ratio

Carburetor Keihin MX FCR 39

Control 4 V / OHC with cam levers

Lubrication Pressure lubrication with 2 Eaton pumps

Engine lubrication 10W50

Primary drive 29:74

Final drive 14:52

Cooling Liquid cooled

Clutch Wet multi-disc clutch, operated hydraulically

Ignition Kokusan digital SX

CHASSIS >> 2009 KTM 450 XC-F

Frame Central double-cradle-type 25CrMo4

Subframe Aluminium 7020, removable

Handlebar Neken Aluminium Ø 28/22 mm (1.10/0.87")

Front suspension WP USD Ø 48 mm (1.89")

Rear suspension WP monoshock PDS

Suspension travel front/rear 300/335 mm (11.81/13.19")

Front brake 260mm (10.24") disc, Brembo double piston

Rear brake 220mm (8.6") disc, Brembo single piston

Rims, front/rear 1.60 x 21"; 2.15 x 18"

Tires, front/rear 80/100-21"; 110/100-18"

Chain X-ring chain 5/8 x 1/4"

Main silencer Aluminium

Steering head angle 63.5°

Trail Adjustable

Wheel base 1475±10 mm (58.07±0.39")

Ground clearance (unloaded) 380 mm (15")

Seat height 985mm (38.78")

Tank capacity approx. 9 liters (2.38 gal)

Weight (no fuel) approx. 108.3 kg (238.76 lbs)

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